Sectional boiler.



PATENTED JULY 9, 1907.

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APPLICATION FILED MAY 5, 1 906.

R E m n Y L 0 II W II v I H L I I I H I HI I I II I B A T HIIHI IIII H H I/ I H HH IH II I N O0O\ II I I M 0 Z I n N E I I v I II I E III II III I [I I Witnesses ag mw MM V N0. s59,593.

I PATENTED JULY 9. 1907.

E. M. BOSLEY. SEGTIONAL BOILER.

APPLICATION FILED MAY 5, 1906. I

ElijahMBosleg Alsb'gs.

. \nvenborz' ELIJAH M. BOSLEY, OF ST. LOUIS, MISSOURI.

I SECTION AL BOILER.

' Specification of Letters Paton Patented July 9, 1907.

Application filed May 5,1906. Serial No. 315,365.

To all whom it may concern: I

Be it known that I, ELrJAn M. Bosnnv, a citizen 0f! the United States, residing at St. Louis, Missouri,

have invented a certain new and useful- Improvement in Sectional Boilers for Heating Systems, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use'the same, reference being had to the accompanying drawings, forming part of this specification, in which-'- Figure l'is a sectional view through a boiler embodying the features of my invention, this view being taken on approximately the line 11 of Fig. 2; Fig. 2 is a cross sectional view taken on the'line 22 of Fig. 1; and Fig. 3 is a detail view of one of the grate sections.

This invention relates to boilers for heating systems.

One object of my invention is to provide an improved down-draft sectional boiler which can be used for either a steam or a hot water heating system and which is so constructed that a greater heating 'area is provided than in the boilers heretofore in use.

Another object of my invention is to provide a sec tional boiler that can be set up with very little labor and which does not require a separate cast base forming the ash-pit and a brick foundation on which said base is mounted. I v

Another object of my invention is to provide a boiler having a hollow cast grate forming a part thereof .through which the water in the boiler circulates, and still another object of my invention is to provide a heater which is periectlyair-tight so that it can be absolutely controlled by an automatic draft door.

The sectional boilers which have heretofore been in use were set up or erected on a cast base located on top of a brick foundation, each section being provided with legs which rested onthe top of the side walls of the cast base. The cost of the brick foundation was considerable and a great deal of labor was required to put the sections of the boiler together because they had to be hoisted up onto the side walls of the cast base, and then blocked up to prevent them from falling until all of the sections were assembled, for if a single section should fall it would knock down a portion of the brick foundation and also the grate. which is mounted in the cast base before the sections of the boiler are put together. In down-draft heaters thebottom of the ash-pit burned out quickly, although it was formed of fire brick, on account of the intense heat to which it was subjected, and as the brick foundation would-crack after it had been in use for a short while, due to expansion caused by the intense heat, it was impossible to control the heater absolutely by an automatic draft door.

My improved boiler has overcome all of the objectionable features above referred to as each section of the boiler is provided with a hollow water base which i-sZ-formed integral with the water legsfthereby dis- "pensing witha cast base and brick foundation-and enabling the boiler to beset up on tracks placed on the floor 'oithe room in which the boiler is located and insuring a perfectly air-tight heater as well as one which has a greater'hea'ting area than those heretofore in use.

Referring to the drawings which represent the pr ferred form of my invention, l designates one of the sections of the boiler which is hollow and is provided t with flue openings 2. The boiler may bemade up of any desired number of these sections which are held together by bolts or rods 3 extending through sleeves t formed integral with each section, the ends of the rods being screw-threaded to receive nuts 5 which clamp the sections of the boiler together. Each section is preferably of the form shown in Fig. 2, and comprises the hollow water legs 7, this hollowwater base being located underneath the grate 8 so that an additional heating area is provided. This hollow water base is subjected to the greatest heat of any portion of the boiler because in a down-draft heater combustion takes place below the'grate. Accordingly, the advantage in having aheating surface located at thispoint can be readily seen.

Communication between each .sectionof the boiler is obtained, by means of tapered nipples 9 centrally loeated at the top and bottom of each section. As the -lower nipples are located at the lowest point of the boiler they will receive all of the sediment which collects in the boiler and thus enables the boiler to be cleaned by flushing out these nipples. The water base 6 of each section is preferably'provided with lugs 10 which engage tracks 11 placed on the floor oi the roofn in which the boiler is located and in setting up the boiler the first section is placed in alinement with said tracks and then simply moved into an upright position, the other sections being assembled in the same manner and secured together by the bolts 3.

The grate ispreferably made up of a'plurality of soctions 12, one of which is shown in Fig. 3, those sections being hollow castings and forming part of the boiler. Preferably, the sections of the grate are connected to two of the sections of the boiler by moans of tapered nipples 13 so that the grate will always be filled with water and thus prevent it from mrning out quickly as well as increasing the heater area of the boiler. In case of breakage it is a very easy matter to renew the gran or any section thereof by simplyremoving the first section of the boiler which permits access in the grate,

this being a decided advantage over the constructions .a hollow water base'6 which is formed integral with i heretofore in iise wherein it was necessary to crawl into the ash-pit to get at the grate. The feed door 14 is'provided with an automatically operated draft door 15 and as the heater is perfectly air-tight it is possible to ab- :solntely control the same the smoke bonnet being also proyided with ,a check draft door 16.

Erich section of-: he boiler is provided with a goodsized dome 17 so thatvthe'boiier can'be used for a steam as well asa hot water heating system; the drawings showing the boiler partially fiiied with water and used ior a steam heating system.

H'aying'thus described my invention, What I claim as new and desire to 'sec ure by Letters Patent, is;

1 A downdraft boiler composed of a pinralityof seciions, each of which has water legs and'a hollow water base. conne'ctiug' the lower ends of said legs, a grate ex:-

tending'oyer the iratefbase's of said section, and 'nipples between the Water bases of each section to permit the water in the base of one section to pass intothe water bases .of the adjacent sections; substantially as described.

2. "A down-dra n boiier-composed of a plurality of sections, each'ot' which has water legs and a, hollow water base connecting the lower ends ofsaid legs, water connections between the water bases of thesections, water counctionsat the upper ends of saidsections, and a h'ollow cast 'grute' arranged in an inclined plane, abov e-the water bases. of said sections and forming part ;of 'the boiler, thereby causing the water to circulate in the direction in which the fia ne ofthe i iretrav els; substantially 3 .e 30 

